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TitleThe structures of a naturally empty cowpea mosaic virus particle and its genome-containing counterpart by cryo-electron microscopy.
Journal, issue, pagesSci Rep, Vol. 7, Issue 1, Page 539, Year 2017
Publish dateApr 3, 2017
AuthorsEmma L Hesketh / Yulia Meshcheriakova / Rebecca F Thompson / George P Lomonossoff / Neil A Ranson /
PubMed AbstractCowpea mosaic virus (CPMV) is a picorna-like plant virus. As well as an intrinsic interest in CPMV as a plant pathogen, CPMV is of major interest in biotechnology applications such as nanotechnology. ...Cowpea mosaic virus (CPMV) is a picorna-like plant virus. As well as an intrinsic interest in CPMV as a plant pathogen, CPMV is of major interest in biotechnology applications such as nanotechnology. Here, we report high resolution cryo electron microscopy (cryo-EM) maps of wild type CPMV containing RNA-2, and of naturally-formed empty CPMV capsids. The resolution of these structures is sufficient to visualise large amino acids. We have refined an atomic model for each map and identified an essential amino acid involved in genome encapsidation. This work has furthered our knowledge of Picornavirales genome encapsidation and will assist further work in the development of CPMV as a biotechnological tool.
External linksSci Rep / PubMed:28373698 / PubMed Central
MethodsEM (single particle)
Resolution4.25 - 4.4 Å
Structure data

3562

5ms1

EMDB-3562, PDB-5ms1:
Cowpea mosaic virus top component (CPMV-T) - naturally occurring empty particles
Method: EM (single particle) / Resolution: 4.25 Å

3565

5msh

EMDB-3565, PDB-5msh:
Cowpea mosaic virus top component (CPMV-T) - naturally occurring empty particles
Method: EM (single particle) / Resolution: 4.25 Å

EMDB-8609:
Cleaved Cowpea Mosaic Virus (CPMV) eVLP structure refined from a small subset of data from the cryo-EM reconstruction of uncleaved eVLP reported previously
Method: EM (single particle) / Resolution: 4.4 Å

Source
  • cowpea mosaic virus
KeywordsVIRUS / CPMV-T / plant virus / picornavirales / CPMV-M

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